What is it about?
Brick kiln waste was used as a low-cost adsorbent for the removal of strontium, cesium, and lead cations by fixed-bed column technique. It was characterized using SEM, XRD, XRF, TGA&DTA, and particle size analyzer.
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Why is it important?
Low-cost adsorbent was used, the column performance was 80.1%, 73.6%, and 68.5% for Pb2+, Cs+, and Sr2+, respectively. Scale-up of continuous processes was studied by applying some kinetic column models. Exhausted bed was regenerated using 0.2 mol/L HNO3 and multiple 10 reused for further adsorption which is necessary for the industrial applications and maintenance cost of the adsorption treatment plant. The process is simple, eco-efficient, and environmentally friendly.
Perspectives
From the fixed-bed column experiments, it was found that the brick kiln waste exhibited favorable adsorption of Pb2+, Cs+, and Sr2+. Brick kiln waste column was regenerated using 0.2 mol/L HNO3 and reused multiple times for further sorption which is needful for the industrial application and maintenance cost of the treatment plant.
Sayed Metwally
Egyptian Atomic Energy Authority
Read the Original
This page is a summary of: Fixed-bed column for the removal of cesium, strontium, and lead ions from aqueous solutions using brick kiln waste, Separation Science and Technology, January 2019, Taylor & Francis,
DOI: 10.1080/01496395.2019.1572189.
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